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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: Loops (was Re: do { quit; } else { })
Date: Tue, 10 Jun 2025 06:01:20 -0700
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Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:

> Kaz Kylheku <643-408-1753@kylheku.com> writes:
> [...]
>
>> Progarms that manipulate strings using standard library functions
>> often take advantage of the above.  Strings are defined as
>> null-terminated arrays;  but it is very common for strings to be
>> arrays that are displaced within larger arrays.
>
> To be pedantic, a string is defined as "a contiguous sequence of
> characters terminated by and including the first null character".
> The word "array" is not used.  It does seem fairly obvious that
> the contiguous sequence will be stored in an array (array
> object?), but the standard doesn't quite say so.

Consider the following program:

   #include <stdio.h>
   #include <string.h>

   typedef unsigned long long ULL;
   ULL hello = ((((0ULL +'o' <<8) +'l' <<8) +'l' <<8) +'e' <<8) + 'h';

   int
   main(){
      printf( "length is %zu\n", strlen( (char*)&hello ) );
      return  0;
   }

On a little endian machine (with CHAR_BIT == 8) this program works,
and TTBOMK conforms to both the letter and the spirit of the C
standard, without any undefined behavior (on that platform).  Yet
there are no arrays in sight, and certainly no array objects.